STIS CCD Imaging Throughputs

Details STIS CCD Imaging Throughputs STIS CCD Imaging Throughputs

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005stis.rept....5p&link_type=abstract

Instrument Science Report STIS 2004-05, 23 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Stis, Space Telescope Imaging Spectrograph

Scientific paper

The results of on-orbit measurements of the STIS/CCD imaging throughputs are reported. Wavelength-dependent aperture corrections and revisions to detector and filter throughput curves are presented. The throughput of the F28X50LP filter is found to be close to prelaunch estimates. Initial on-orbit measurements of this filter had suggested a 28% lower throughput, but we find instead that the overall sensitivity of the STIS CCD itself needed to be decreased by as much as 18% at long wavelengths. Wavelength-dependent aperture corrections are also important for the reddest stars, with as much as 20% of the flux outside of a 0.5" radius.

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